ET MALWARE CrimsonRAT Host Details Exfil

Query · suricata

flow:established,to_server;
content:"|12 00 00 00 00|"; startswith;
content:"|7c 7c 20 7c 7c|C|3a 5c|Users"; fast_pattern;
Raw source ET MALWARE CrimsonRAT Host Details Exfil · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE CrimsonRAT Host Details Exfil";
    flow:established,to_server;
    content:"|12 00 00 00 00|"; startswith;
    content:"|7c 7c 20 7c 7c|C|3a 5c|Users"; fast_pattern;
    reference:md5,da2331ac3e073164d54bcc5323cf0250;
    reference:url,twitter.com/0xrb/status/1795362130281324685;
    classtype:trojan-activity;
    sid:2052908; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_05_28, deployment Perimeter, malware_family CrimsonRAT, confidence High, signature_severity Critical, updated_at 2024_05_28;
)

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